I replaced my mobo today and now my monitor wont turn on. the diode is orange all the time, unless i unplug the vga cord. Then it says check video cord. I am running a custom built computer specs below.
asus a8m2n-la motherboard
amd athlon x64
2 sata hdds totaling 410gigs storage
integrated nvidia graphics
I have replaced the power supply so i know that is not the problem. at one point the monitor did wake and it said system fan has failed, so i replaced my cpu and chassis fan.
Try re-seating the RAM (taking it out and putting it back in again). That sometimes helps. If that doesn't, try to find a RAM stick to borrow and test out.